Frequencies for first 10,000 rows of fldcd_tr variable in vehicle dataset :

 TRUCK FUEL |
       CODE |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        117        1.17        1.17
          * |      6,249       62.49       63.66
          9 |        513        5.13       68.79
          D |        713        7.13       75.92
          G |      2,408       24.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016